﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System.Windows;
using System.Windows.Media.Animation;

namespace Xceed.Silverlight.DataGrid
{
  internal class TransitionContext
  {
    public TransitionContext(Storyboard storyboard, EasingFunctionBase ease )
    {
      this.Storyboard = storyboard;
      this.EasingFunction = ease;
      this.StoryboardStarted = false;
    }

    public bool StoryboardStarted
    {
      get;
      private set;
    }

    public double CurrentTime
    {
      get
      {
        if( !this.StoryboardStarted )
          return 0;

        return this.Storyboard.GetCurrentTime().TotalMilliseconds;
      }
    }

    public double TotalTime
    {
      get
      {
        return this.Storyboard.Duration.TimeSpan.TotalMilliseconds;
      }
    }

    public Duration Duration
    {
      get
      {
        return this.Storyboard.Duration;
      }
      set
      {
        this.Storyboard.Duration = value;
      }
    }

    public EasingFunctionBase EasingFunction
    {
      get;
      private set;
    }

    public Storyboard Storyboard
    {
      get; 
      private set;
    }

    public void StartStoryboard()
    {
      if( this.StoryboardStarted )
        throw new DataGridInternalException();

      this.StoryboardStarted = true;
      this.Storyboard.Begin();
    }
  }
}
